Congratulations on your graduation, just like five years ago… My son's friend, Kitayama-kun, and I have been in a casual relationship for five years now. It started five years ago when my husband's infidelity was exposed; Kitayama-kun comforted me with a gentle kiss as I was feeling down. To avoid interfering with both of our exams, we waited until the day of the graduation ceremony to do it. Then, responding to Kitayama-kun's feelings, we had our first physical relationship. For five years since then, we've been secretly meeting behind my husband and son's backs, but things changed when Kitayama-kun got a girlfriend…
